1. A multi-institutional retrospective pooled outcome analysis of molecularly annotated pediatric supratentorial ZFTA-fused ependymoma
- Author
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Ng, Chia Huan, Obrecht, Denise, Wells, Olivia, Zapotocky, Michal, Sumerauer, David, Coltin, Hallie, Khuong-Quang, Dong-Anh, Eisenstat, David D; https://orcid.org/0000-0002-5976-0798, Kinross, Kathryn M, White, Christine L, Algar, Elizabeth M, Luck, Amanda, Witt, Hendrik, Schüller, Ulrich; https://orcid.org/0000-0002-8731-1121, Mynarek, Martin; https://orcid.org/0000-0003-3302-2719, Pietsch, Torsten, Gerber, Nicolas U, Benesch, Martin, Warmuth-Metz, Monika; https://orcid.org/0000-0002-3544-319X, Kortmann, Rolf, Bison, Brigitte, Taylor, Michael D, Rutkowski, Stefan, Pfister, Stefan M, Jones, David T W; https://orcid.org/0000-0002-2036-5141, Gottardo, Nicholas G; https://orcid.org/0000-0002-1082-6776, von Hoff, Katja; https://orcid.org/0000-0002-5669-8546, Pajtler, Kristian W; https://orcid.org/0000-0002-3562-6121, Ramaswamy, Vijay; https://orcid.org/0000-0002-6557-895X, Hansford, Jordan R; https://orcid.org/0000-0001-7733-383X, Ng, Chia Huan, Obrecht, Denise, Wells, Olivia, Zapotocky, Michal, Sumerauer, David, Coltin, Hallie, Khuong-Quang, Dong-Anh, Eisenstat, David D; https://orcid.org/0000-0002-5976-0798, Kinross, Kathryn M, White, Christine L, Algar, Elizabeth M, Luck, Amanda, Witt, Hendrik, Schüller, Ulrich; https://orcid.org/0000-0002-8731-1121, Mynarek, Martin; https://orcid.org/0000-0003-3302-2719, Pietsch, Torsten, Gerber, Nicolas U, Benesch, Martin, Warmuth-Metz, Monika; https://orcid.org/0000-0002-3544-319X, Kortmann, Rolf, Bison, Brigitte, Taylor, Michael D, Rutkowski, Stefan, Pfister, Stefan M, Jones, David T W; https://orcid.org/0000-0002-2036-5141, Gottardo, Nicholas G; https://orcid.org/0000-0002-1082-6776, von Hoff, Katja; https://orcid.org/0000-0002-5669-8546, Pajtler, Kristian W; https://orcid.org/0000-0002-3562-6121, Ramaswamy, Vijay; https://orcid.org/0000-0002-6557-895X, and Hansford, Jordan R; https://orcid.org/0000-0001-7733-383X
- Abstract
BACKGROUND ZFTA-RELA (formerly known as c11orf-RELA) fused supratentorial ependymoma (ZFTAfus ST-EPN) has been recognized as a novel entity in the 2016 WHO classification of CNS tumors and further defined in the recent 2021 edition. ZFTAfus ST-EPN was reported to portend poorer prognosis when compared to its counterpart, YAP1 ST-EPN in some previously published series. The aim of this study was to determine the treatment outcome of molecularly confirmed and conventionally treated ZFTAfus ST-EPN patients treated in multiple institutions. METHODS We conducted a retrospective analysis of all pediatric patients with molecularly confirmed ZFTAfus ST-EPN patients treated in multiple institutions in 5 different countries (Australia, Canada, Germany, Switzerland, and Czechia). Survival outcomes were analyzed and correlated with clinical characteristics and treatment approaches. RESULTS A total of 108 patients were collated from multiple institutions in 5 different countries across three continents. We found across the entire cohort that the 5- and 10-year PFS were 65% and 63%, respectively. The 5- and 10-year OS of this cohort of patients were 87% and 73%. The rates of gross total resection (GTR) were high with 84 out of 108 (77.8%) patients achieving GTR. The vast majority of patients also received post-operative radiotherapy, 98 out of 108 (90.7%). Chemotherapy did not appear to provide any survival benefit in our patient cohort. CONCLUSION This is the largest study to date of contemporaneously treated molecularly confirmed ZFTAfus ST-EPN patients which identified markedly improved survival outcomes compared to previously published series. This study also re-emphasizes the importance of maximal surgical resection in achieving optimal outcomes in pediatric patients with supratentorial ependymoma.
- Published
- 2023